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I would like to reduce it and allow full swing like you would in cobra type radios. I run a palomar 300a or a Maco 200 with it, and neither seem to like a 5 watt key. Granted it's not a big swinger, 12 or so pep. And the audio "pinches" now that the key is that high. I've been searching the...

just got a palomar 300a from an older gentleman that was getting out of radio due to lack of interest. It seems to be a great amp. It's 2-6kd6 driving 2-6lf6's. on my pres Dwight it does 550 pep under normal modulation. Not as stout as my maco's but much cleaner. Anyway, I started having...

I've got a Dwight D with the 858 chip and would like to drop the dead key on this unit. When I first got it, it was around 3 but had be de-tuned so to speak. After replacing all the electrolytic caps in the radio and repeaking, it has a 5.5 watt key swinging about 12. The peak isn't a concern as...

Yeah, for the most part I've not had luck with mosfets. The 13n10 is the exception. They work out pretty well.

Yeah.. it was a mistake, I'm aware of that.. as far as a money pit, it may be but I am going to learn about tube amps with this box. It cost me next to nothing, so why not.

Had to look on eBay at my messages and yeah, I bought a kit from you a few weeks ago lol

What are the two variables on the box? One on the back and one by the tubes? The one in the back doesn't do much of anything that I can see on a meter, but the one by the tubes will run the dead key up and down? And where would I get the big resistors and chokes for this rascal. The one on the...

I had it hooked up behind an old cobra 25 then I hooked it to a single final 3300. It only does 17 pep or so, I just wanted the audio from the connex over the cobra

@giboni @nomadradio i will get some pictures up and let y'all see what y'all think. Like I said, I've no idea yet what's going on in there.

Yeah, I've got the green weenie. It's still a really good looking box with the only wear showing on the transformer. Plates are kinda dirty.

That I have no idea. According to the schematic, it was 6lb6. I e been told to not change the sockets to take those tubes. Would turn a decent amp into a door stop.

Hello all. I hope I'm posting this in the right forum. I am brand new to tube amplifiers. I've always run transistor amps and can get my way thru one of them decently. I moved to west Tennessee a while back and everyone here runs tubes. So when in Rome... ok so I bought a Maco 200 to learn on...

Well call it dumb luck, but I wiggled the clarifier knob while I turned it, with the button in and clarifier on, and noticed the freqs jumping around. So I took that band board out and resoldered the three pins on the pot. No change. So I swapped it for another pot and it works. I have an...

With the button off you can't adjust freqs, which is how it should work, correct? And with the button pushed in, to turn it on, the frequency drops about a half a channel, but the clarifier still won't work. Like it's turned off. I'm not sure of the voltages that are supposed to be on the pins...

D38 is there as well as r113. D38 has a voltage of 4.58 and cathode has 3.99 volts in rx. R113 has 5.45 on the left side and 8.60 or the right side in rx and drops to .06 volts in tx. As there were no traces cut underneath I'm ruling out a couple ways. The two switch is the obvious one. I've got...

Ok, once moving here to west Tennessee, I can see there is a bad need for a good technician. The one my radio friends frequent, to me, is apparently not a tech, but more of a YouTube modifier. One of the guys asked me to look at his 2547, because the clarifier wouldn't work after a channel...

Robb, the supply is set at 13.8 volts. when i got it i turned it down from where it was. its always run well at that setting. i will turn it back out of curiosity. but since putting the 13n10's back in, ive had no problems from the power supply, dimming or oscillation. sonoma, ive replaced a...

yeah it had a built in supply.

Other than putting a fan inside the unit to pull heat, I can't do much about the heat sink. I've got a few small fans, I may try one to see what happens. But while I'm keying, I've got my hands on the transistors, and none get hot. Barely warm. The 827 reg gets warm but that's about it. I will...